Smalltalk VS D (Programming Language)

• Pure Object-Oriented Language
  Smalltalk is consistently object-oriented. Everything is an object, including primitive operations, which simplifies the mental model for developers.
• Interactive Development Environment
  Smalltalk offers a rich, dynamic development environment with tools for live code updates and immediate feedback, enhancing productivity and experimentation.
• Simple Syntax
  The language has a small and easily understandable syntax, which makes it more accessible to beginners and allows developers to focus more on problem-solving.
• Dynamic Typing
  Smalltalk's dynamic typing allows for flexible coding and polymorphism, making it easy to write generic and reusable code components.
• Mature and Influential
  As one of the oldest object-oriented languages, Smalltalk has a rich history, influencing many modern languages like Java, Ruby, and Python.

Possible disadvantages

• Performance
  Smalltalk can suffer from slower performance due to its high level of abstraction and dynamic typing, which may not be suitable for compute-intensive applications.
• Niche Community
  The Smalltalk community is relatively small compared to more mainstream languages, which can limit resources, libraries, and support available for developers.
• Learning Curve
  While the syntax is simple, Smalltalk's unique development environment and paradigms can introduce a learning curve for developers coming from other languages.
• Limited Integration
  Interfacing Smalltalk with non-Smalltalk systems can be challenging, limiting its use in mixed technology environments without proper bridging mechanisms.
• Dynamic Typing Drawbacks
  While flexible, dynamic typing can also lead to runtime errors that are not caught at compile time, potentially making debugging more difficult.

• Performance
  D is designed to be a high-performance systems programming language, offering performance comparable to C and C++ through native machine code compilation.
• Expressiveness
  D features a rich standard library and modern language constructs, such as garbage collection, first-class arrays, and advanced templating, making it easier to write expressive and maintainable code.
• Memory Safety
  D offers optional garbage collection along with manual memory management. This hybrid approach can help in developing safer applications by reducing memory-related errors.
• Interoperability
  D can easily interoperate with C API, enabling seamless integration with existing C libraries and systems. It also supports better C++ interoperability compared to other languages.
• Built-in Unit Testing
  D has built-in support for unit tests, allowing developers to write and run tests as part of the language itself, facilitating test-driven development.
• Concurrency
  D offers built-in concurrency support with message passing, similar to the actor model found in languages like Erlang, making it easier to write concurrent and parallel programs.

Possible disadvantages

• Adoption
  D is not as widely adopted as other languages like C, C++, or Java. This limited adoption means fewer libraries, frameworks, and community support.
• Toolchain Maturity
  While D's compilers and tools have improved over the years, they may still lack the maturity and feature set of more established languages, which can affect developer productivity.
• Learning Curve
  D's richness and combination of paradigms (such as imperative, object-oriented, and functional programming) can present a steep learning curve for new developers.
• Garbage Collection
  Although D offers optional garbage collection, its reliance on it for memory safety might be seen as a drawback for real-time system development where deterministic memory management is crucial.
• Ecosystem
  The ecosystem for D is less vibrant compared to more popular languages, leading to potentially fewer third-party libraries, tools, and resources.
• Standard Library Documentation
  The standard library documentation can be inconsistent or less comprehensive compared to other languages, making it difficult for developers to fully utilize all features of the language.

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D Language Tutorial

• Old version of offline Scratch that had a secret OS

  Also, it's not really an "operating system", nor was it implemented by the ST. It's just part of Squeak (you got the name right), the "engine" Scratch 1.x was made with (which lets you edit the code in the same window it's running in). Source: over 3 years ago

• Ask HN: Alternatives to organizing code in files and folders?

  Just downloaded https://squeak.org/ to play around with this concept. I wonder if there is already a modern tool/suite for Node/Python inspired by Smalltalk... - Source: Hacker News / over 3 years ago

• What are some important differences between the popular versions of OOP (e.g. Java, Python) vs. the purist's versions of OOP (e.g. Smalltalk)?

  AFAIK the major SmallTalk distributions are https://squeak.org/ and https://pharo.org/. I've heard that Pharo is more complex and "practical", while Squeak is more educational and beginner-friendly. But both stick to their roots with... Source: over 3 years ago

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• Ask HN: What is your (AI) dev tech stack / workflow? (June 2026)

  I've spent 2 weeks (2-4h per day) to make D language[1] version of Sciter SDK [2] Choice of AI "tooling" was by accident - typed something like "how to define copy constructor in D for custom structure" in Microsoft's Copilot in Edge... - Source: Hacker News / 4 months ago

• Rue: Higher level than Rust, lower level than Go

  > Mostly, I am not really trying to compete with C/C++/Rust on speed, but I'm not going to add a GC either. So I'm somewhere in there. Out of curiosity, how would you compare the goals of Rue with something like D[0] or one of the... - Source: Hacker News / 10 months ago

• Pony: An actor-model, capabilities-secure, high-performance programming language

  The D language home page has something similar with a drop down with code examples https://dlang.org/. - Source: Hacker News / about 1 year ago

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